AirHint found the following cheapest return flights from Barcelona (BCN) to San Juan (SJU) in May 2026 (see full year).

Return flights

05 May - 11 May	Vueling Airlines
01 May - 11 May	Wizz Air Malta
03 May - 11 May	Royal Air Maroc
03 May - 10 May	Royal Air Maroc
01 May - 10 May	jetBlue
01 May - 13 May	United
06 May - 13 May	United
01 May - 09 May	United
13 May - 25 May	United
11 May - 25 May	United
28 May - 08 Jun	United
25 May - 08 Jun	United
27 May - 06 Jun	Ryanair
18 May - 01 Jun	KLM

Also check the deals for one-way flights from Barcelona to San Juan in May.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Barcelona to San Juan in May from 529€

Return flights